Centrifugal battery liquid injection mechanism and liquid injection method thereof

ABSTRACT

Provided are a centrifugal battery liquid injection mechanism and a liquid injection method thereof. The centrifugal battery liquid injection mechanism comprises a liquid injection device and a driving device, the liquid injection device is provided with a piston mechanism and a liquid outlet head capable of being opened and closed, and one end of the liquid injection device close to the liquid outlet head is further provided with a liquid injection port capable of being opened and closed; and the liquid injection port is used for injecting a wetting liquid into the liquid injection device. The liquid injection device is connected with a to-be-wetted device through the liquid outlet head, so as to inject the wetting liquid into the to-be-wetted device. The driving device is connected with the to-be-wetted device for driving the to-be-wetted device to move.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims foreign priority of Chinese Patent ApplicationNo. 202210275891.6, filed on Mar. 21, 2022 in the China NationalIntellectual Property Administration, the disclosures of all of whichare hereby incorporated by reference.

TECHNICAL FIELD

The present invention belongs to battery electrolyte injectionequipment, and particularly relates to a centrifugal battery liquidinjection mechanism and a liquid injection method thereof.

BACKGROUND

With the advent of the era of electronic intelligence, people's demandfor electronic products is increasing, and batteries providing workingpower for the electronic products have become the focus, especially thedevelopment of lithium ion battery has become a hot topic. Electrolyteis an important component of the lithium ion battery, and liquidinjection is an important process of injecting a certain amount ofelectrolyte into the lithium ion battery, and is a very important linkin a production process of the lithium ion battery.

However, at present, according to a method of battery liquid injectionin the market, the electrolyte is injected into the battery first, thenthe whole battery is put into a high-pressure cavity, and the battery iswetted by applying a high pressure through the high-pressure cavity.This method has the following defects: firstly, the high-pressure cavitybelongs to a third class high pressure vessel, with a high manufacturingcost and a high risk; secondly, a positive and negative pressurecirculation process of the high-pressure cavity has a long time periodand an unapparent wetting effect; thirdly, there are a complex structureand a cost high; and fourthly, it is difficult to control a liquidinjection amount, wherein excessive liquid injection amount easilycauses a bulge of the battery, resulting in a poor thickness of thebattery; insufficient liquid injection can reduce a capacity of thebattery; and uneven liquid injection amount leads to an unstableperformance of the battery.

SUMMARY

In order to overcome the defects in the prior art above, the presentinvention puts forward a centrifugal battery liquid injection mechanismand a liquid injection method thereof, with the advantages of apparentwetting effect, high safety performance, low cost and simple operation.

The object of the present invention is achieved by the followingtechnical solutions.

A centrifugal battery liquid injection mechanism is provided, whichcomprises a liquid injection device and a driving device, wherein,

-   -   the liquid injection device is provided with a piston mechanism        and a liquid outlet head capable of being opened and closed; one        end of the liquid injection device close to the liquid outlet        head is further provided with a liquid injection port capable of        being opened and closed; the liquid injection port is used for        injecting a wetting liquid into the liquid injection device; and        the liquid injection device is connected with a to-be-wetted        device through the liquid outlet head, so as to inject the        wetting liquid into the to-be-wetted device; and    -   the driving device is connected with the to-be-wetted device for        driving the to-be-wetted device to move.

In a specific embodiment, one end of the liquid injection device faraway from the liquid outlet head is provided with a mechanical valve;and the mechanical valve is connected with an external air pump, so asto drive the piston mechanism to slide in the liquid injection devicebased air blowing and suction of the air pump.

In a specific embodiment, the piston mechanism comprises a piston and adriving rod; an edge of the piston clings to an inner wall of the liquidinjection device, and the driving rod is connected with the piston, soas to drive the piston to slide along the inner wall of the liquidinjection device.

In a specific embodiment, the centrifugal battery liquid injectionmechanism further comprises a supporting device, wherein the liquidinjection device and the to-be-wetted device are both connected with thesupporting device; and

-   -   the driving device is connected with the to-be-wetted device by        being connected with the supporting device.

In a specific embodiment, the supporting device is provided with abayonet; and the to-be-wetted device is detachably connected with thesupporting device by being embedded into the bayonet.

In a specific embodiment, the supporting device is further provided witha stereoscopic position regulating assembly, and the liquid injectiondevice is connected with the stereoscopic position regulating assembly.

In a specific embodiment, the liquid outlet head comprises a hose tube.

A liquid injection method is provided, wherein the liquid injectionmethod uses the centrifugal battery liquid injection mechanism, andcomprises the following steps of:

-   -   injecting the wetting liquid into the liquid injection device        through the liquid injection port;    -   opening the liquid outlet head, controlling the piston mechanism        to move towards one end of the liquid outlet head, and injecting        the wetting liquid in the liquid injection device into the        to-be-wetted device; and    -   controlling the driving device to drive the to-be-wetted device        to move, so that the wetting liquid is fully wetted in the        to-be-wetted device.

In a specific embodiment, the step of injecting the wetting liquid intothe liquid injection device through the liquid injection port comprises:

-   -   closing the liquid outlet head and the liquid injection port,        and controlling the piston mechanism to move towards one end far        away from the liquid outlet head, so as to form a negative        pressure space between the liquid outlet head and the piston        mechanism;    -   opening the liquid injection port, and injecting the wetting        liquid into the liquid injection device through the liquid        injection port; and    -   after finishing liquid injection, closing the liquid injection        port.

In a specific embodiment, the liquid injection method further comprises:

-   -   keeping the liquid injection port in a closed state, opening the        liquid outlet head, and controlling the piston mechanism to move        towards one end far away from the liquid outlet head, so as to        pump out gas in the to-be-wetted device.

The present invention at least has the following beneficial effects.

The present invention provides the centrifugal battery liquid injectionmechanism and the liquid injection method thereof. The centrifugalbattery liquid injection mechanism comprises the liquid injection deviceand the driving device, the liquid injection device is provided with thepiston mechanism and the liquid outlet head capable of being opened andclosed, and one end of the liquid injection device close to the liquidoutlet head is further provided with the liquid injection port capableof being opened and closed; and the liquid injection port is used forinjecting the wetting liquid into the liquid injection device. Theliquid injection device is connected with the to-be-wetted devicethrough the liquid outlet head, so as to inject the wetting liquid intothe to-be-wetted device. The driving device is connected with theto-be-wetted device for driving the to-be-wetted device to move.Compared with the prior art, the centrifugal battery liquid injectionmechanism and the liquid injection method thereof put forward by theinvention have the advantages of apparent wetting effect, high safetyperformance, low cost and simple operation.

Further, the to-be-wetted device is detachably connected with thesupporting device by arranging the bayonet on the supporting device, sothat the to-be-wetted device is disassembled conveniently, andmeanwhile, a fixing function of the bayonet improves the safety and thereliability during movement of the to-be-wetted device.

Further, the liquid outlet head of the liquid injection device is thehose tube or the supporting device is provided with the stereoscopicposition adjusting assembly, which is convenient for adjusting anoverall position of the liquid outlet head of the liquid injectiondevice or the liquid injection device, so that the to-be-wetted deviceis conveniently connected with the liquid injection device, and outsideair will not enter the to-be-wetted device or the liquid injectiondevice, thus improving a liquid injection efficiency.

To make the above objects, features and advantages of the presentinvention more obvious and easier to understand, the following preferredembodiments are given in detail with reference to the drawings attached.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate the technical solutions in the embodiments of thepresent application more clearly, the accompanying drawings which needto be used in describing the embodiments will be briefly introducedhereinafter. Apparently, the accompanying drawings described hereinafterare only some embodiments of the present application, those of ordinaryskills in the art may obtain other accompanying drawings according tothese accompanying drawings without going through any creative work.

FIG. 1 is an overall schematic diagram of a centrifugal battery liquidinjection mechanism provided by Embodiment 1;

FIG. 2 is a sectional view of the centrifugal battery liquid injectionmechanism provided by Embodiment 1;

FIG. 3 is a schematic diagram of a base plate, a bayonet and ato-be-wetted device provided by Embodiment 1;

FIG. 4 is a schematic diagram of the base plate, a bracket and a liquidinjection device provided by Embodiment 1;

FIG. 5 is n exploded view of the centrifugal battery liquid injectionmechanism provided by Embodiment 1;

FIG. 6 is a schematic diagram of the liquid injection device provided byEmbodiment 1; and

FIG. 7 is a flow chart of liquid injection provided by Embodiment 2.

REFERENCE NUMERALS

-   -   1 refers to to-be-wetted device; 2 refers to liquid injection        device; 3 refers to driving device; 4 refers to supporting        device;    -   11 refers to liquid injection port; 12 refers to mechanical        valve; 13 refers to piston;    -   22 refers to supporting column; 23 refers to limiting member; 27        refers to liquid outlet head;    -   41 refers to base plate; 42 refers to bracket; 43 refers to        bayonet; and 421 refers to fixed plate; 422 refers to first        supporting plate; and 423 refers to second supporting plate.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention areclearly and completely described with reference to the drawings in theembodiments of the present invention. Obviously, the describedembodiments are merely some but not all of the embodiments of thepresent invention. Based on the embodiments in the present invention,all other embodiments obtained by those of ordinary skills in the artwithout going through any creative work should fall within the scope ofprotection of the present invention.

The present invention provides a centrifugal battery liquid injectionmechanism and a liquid injection method thereof. The centrifugal batteryliquid injection mechanism comprises a liquid injection device 2 and adriving device 3, the liquid injection device 2 is provided with apiston mechanism and a liquid outlet head 27 capable of being opened andclosed, and one end of the liquid injection device 2 close to the liquidoutlet head 27 is further provided with a liquid injection port 11capable of being opened and closed; and the liquid injection port 11 isused for injecting a wetting liquid into the liquid injection device 2.The liquid injection device 2 is connected with a to-be-wetted device 1through the liquid outlet head 27, so as to inject the wetting liquidinto the to-be-wetted device 1. The driving device 3 is connected withthe to-be-wetted device 1 for driving the to-be-wetted device 1 to move.A liquid injection method thereof comprises the following steps of:injecting the wetting liquid into the liquid injection device 2 throughthe liquid injection port 11; opening the liquid outlet head 27,controlling the piston mechanism to move towards one end of the liquidoutlet head 27, and injecting the wetting liquid in the liquid injectiondevice 2 into the to-be-wetted device 1; and controlling the drivingdevice 3 to drive the to-be-wetted device 1 to move, so that the wettingliquid is fully wetted in the to-be-wetted device 1. Compared with theprior art, the centrifugal battery liquid injection mechanism and theliquid injection method thereof put forward by the invention have theadvantages of apparent wetting effect, high safety performance, low costand simple operation.

Embodiment 1

As shown in FIG. 1 to FIG. 4 , a centrifugal battery liquid injectionmechanism comprises a liquid injection device 2 and a driving device 3.The liquid injection device 2 is provided with a piston mechanism 13 anda liquid outlet head 27 capable of being opened and closed. One end ofthe liquid injection device 2 close to the liquid outlet head 27 isfurther provided with a liquid injection port 11 capable of being openedand closed, and the liquid injection port 11 is used for injecting awetting liquid into the liquid injection device 2. The liquid injectiondevice 2 is connected with a to-be-wetted device 1 through the liquidoutlet head 27, so as to inject the wetting liquid into the to-be-wetteddevice 1. The driving device 3 is connected with the to-be-wetted device1 for driving the to-be-wetted device 1 to move.

Specifically, the driving the to-be-wetted device 1 to move may berepetitive movement along multiple points or rotation around a centerpoint. In the embodiment, the driving device 3 is connected with theto-be-wetted device 1 for driving the to-be-wetted device 1 to rotatearound the center point, so that the wetting liquid is fully wetted inthe to-be-wetted device 1, thus improving a wetting efficiency.

As shown in FIG. 1 , FIG. 2 and FIG. 4 , the piston mechanism comprisesa piston 13, an edge of the piston 13 clings to an inner wall of theliquid injection device 2, and the piston 13 is driven to slide alongthe inner wall of the liquid injection device 2 under an action of adriving rod or an external air pump, so as to generate a positivepressure and a negative pressure between the liquid outlet head 27 andthe piston 13. The piston 13 being driven by the external air pumpspecifically comprises that: one end of the liquid injection device 2far away from the liquid outlet head 27 is provided with a mechanicalvalve 12, and the mechanical valve 12 is connected with the external airpump, so as to drive the piston mechanism to slide in the liquidinjection device 2 based on air blowing and suction of the air pump. Thepiston 13 being driven by the driving rod specifically comprises that:the edge of the piston 13 clings to the inner wall of the liquidinjection device 2, and the driving rod is connected with the piston 13,so as to drive the piston 13 to slide along the inner wall of the liquidinjection device 2.

In an embodiment, the piston 13 is driven by the external air pump,wherein one end of the liquid injection device 2 far away from theliquid outlet head 27 is provided with the mechanical valve 12, and themechanical valve 12 is connected with the external air pump. When airsuction is performed on the liquid injection device 2, the piston 13moves towards one end far away from the liquid outlet head 27; and whenair blowing is performed on the liquid injection device 2, the piston 13moves towards one end close to the liquid outlet head 27, thus injectingthe wetting liquid in the liquid injection device 2 into theto-be-wetted device 1.

In another embodiment, the piston 13 is driven by the driving rod,wherein the piston mechanism comprises the piston 13 and the drivingrod, the edge of the piston 13 clings to the inner wall of the liquidinjection device 2, the driving rod is connected with the piston 13, andthe driving rod pushes the piston 13 to move towards one end close to orfar away from the liquid outlet head 27. When the driving rod pushes thepiston 13 to move towards one end close to the liquid outlet head 27,the wetting liquid in the liquid injection device 2 is injected into theto-be-wetted device 1.

In other embodiments, one end of the liquid injection device 2 far awayfrom the liquid outlet head 27 is provided with the mechanical valve 12,and the mechanical valve 12 is used for being connected with theexternal air pump, so as to drive the piston mechanism to slide in theliquid injection device 2 through air blowing and suction of the airpump. The piston mechanism comprises the piston 13 and the driving rod,the edge of the piston 13 clings to the inner wall of the liquidinjection device 2, and the driving rod is connected with the piston 13,so as to drive the piston 13 to slide along the inner wall of the liquidinjection device 2 through the driving rod.

As shown in FIG. 1 and FIG. 6 , one end of the liquid injection device 2close to the liquid outlet head 27 may also be provided with themechanical valve 12, the mechanical valve 12 is connected with theexternal air pump for pumping out gas in the liquid injection device 2,so as to ensure a vacuum state of the liquid injection device 2.

As shown in FIG. 1 to FIG. 4 , the centrifugal battery liquid injectionmechanism further comprises a supporting device 4, wherein the liquidinjection device 2 and the to-be-wetted device 1 are both connected withthe supporting device 4. The driving device 3 is connected with theto-be-wetted device 1 by being connected with the supporting device 4.Specifically, the supporting device 4 is provided with a bayonet 43; andthe to-be-wetted device 1 is detachably connected with the supportingdevice 4 by being embedded into the bayonet 43.

In the embodiment, the bayonet 43 is a concave structure formed by twolimiting blocks, and used for limiting positions of four surfaces of theto-be-wetted device 1. When the to-be-wetted device 1 is arrangedbetween the two limiting blocks, front, rear, left and right surfaces ofthe to-be-wetted device 1 are all within a scope limited by the limitingblocks, and a position of the to-be-wetted device 1 is limited bycooperation of the two limiting blocks, so as to achieve a structuralstability and improve a safety of liquid injection.

In other embodiments, the bayonet 43 is a protruding structure, theto-be-wetted device 1 is provided with a recess, and the to-be-wetteddevice 1 is limited at the bayonet 43 by cooperation between theprotrusion and the recess.

As shown in FIG. 1 to FIG. 5 , the liquid outlet head 27 may be a hosetube or a hard tube. It is easier to change a position of the liquidoutlet head 27 by using the hose tube, so that a sealing performancebetween the to-be-wetted device 1 and the liquid injection device 2 isstrengthened, and external gas cannot enter the to-be-wetted device 1 orthe liquid injection device 2, thus improving the liquid injectionefficiency. The liquid outlet head has a long service life and is noteasy to be damaged by using the hard tube.

In the embodiment, the liquid outlet head 27 comprises the hose tube,and the to-be-wetted device 1 and the liquid injection device 2 areconnected through the hose tube.

As shown in FIG. 1 to FIG. 5 , the supporting device 4 is furtherprovided with a stereoscopic position regulating assembly, and theliquid injection device 2 is connected with the stereoscopic positionregulating assembly. Specifically, the supporting device 4 is providedwith a bracket 42, and the liquid injection device 2 penetrates throughthe bracket 42, so that the liquid injection device 2 is detachablyconnected with the bracket 42. The position adjusting assembly isarranged between the liquid injection device 2 and the bracket 42 foradjusting a position of the liquid injection device 2.

In an embodiment, the stereoscopic position regulating assembly isarranged at one end far away from the liquid injection device 2, and aposition of the bracket 42 is adjusted through the stereoscopic positionregulating assembly, thus adjusting the position of the liquid injectiondevice 2.

In another embodiment, the stereoscopic position regulating assembly isarranged between the liquid injection device 2 and the bracket 42, andthe position of the liquid injection device 2 is directly adjustedthrough the stereoscopic position regulating assembly.

As shown in FIG. 1 and FIG. 4 , the supporting device 4 is furtherprovided with a base plate 41, the base plate 41 is welded or threadedlyconnected with the bracket 42 and the bayonet 43 respectively for fixingthe bracket 42 and the bayonet 43. Two opposite ends of the base plate41 are respectively provided with a notch, the notch may be a circle, arectangle, a triangle or other polygons with more than four sides. Inthe embodiment, the notch is the rectangle, so that a cross section ofthe base plate 41 is H-shaped, the bracket 42 is arranged at one end ofthe base plate 41, and a bottom portion of the bracket 42 is connectedwith an edge of the notch.

The base plate 41, the bracket 42 and the bayonet 43 are provided withhollowed-out portions, and the hollowed-out portions comprise a circle,a triangle, a rectangle or a polygon. The polygon refers to a patternwith more than four sides. Specifically, an edge of the base plate 41and a surface of the bayonet 43 are provided with a plurality ofcircular hollowed-out portions, and the circular hollowed-out portionsare arranged at equal intervals. The bracket 42 is provided with atriangular hollowed-out portion and a rectangular hollowed-out portion.An overall weight of the centrifugal battery injection mechanism isreduced and an appearance of a product is improved through thehollowed-out portions arranged in the base plate 41, the bracket 42 andthe bayonet 43.

Specifically, the bracket 42 comprises a fixed plate 421, a firstsupporting plate 422 and a second supporting plate 423. The firstsupporting plate 422 and the second supporting plate 423 are connectedto two edges of the fixed plate 421, and the first supporting plate 422and the second supporting plate 423 are triangular, thus having theadvantage of stable support. Hollowed-out portions inside the firstsupporting plate 422 and the second supporting plate 423 are alsotriangular, and a lower portion of the fixed plate 421 is provided witha rectangular hollowed-out portion. The design of the hollowed-outportions saves materials and reduces a product quality on one hand, andrealizes an attractive appearance of the product.

As shown in FIG. 1 , FIG. 4 and FIG. 5 , a surface of the liquidinjection device 2 is surrounded by a plurality of supporting columns22, and the supporting columns 22 penetrate through the bracket 42. Thesupporting column 22 is provided with a limiting member 23, and thelimiting member 23 abuts against the bracket 42 for fixing the liquidinjection device 2 on the bracket 42, thus ensuring a stability of theliquid injection device 2, and ensuring that the liquid injection device2 is not easy to slide off the bracket 42 to damage the liquid injectiondevice 2.

In the embodiment, the limiting member 23 comprises a limiting sheet anda limiting ring, the limiting sheet and the limiting ring are arrangedon the supporting column 22, and a distance between the limiting sheetand the limiting ring is no less than a thickness of the bracket 42, sothat one sides of the limiting sheet and the limiting ring close to thebracket 42 abut against the bracket 42, thus positioning the liquidinjection device 2 and making a structure of the liquid injection device2 more stable.

In other embodiments, the limiting member 23 is a screw, a bolt or apin, and the limiting member 23 is connected to the bracket 42 toposition the liquid injection device 2, thus making the structure of theliquid injection device 2 more stable.

As shown in FIG. 1 to FIG. 5 , the centrifugal battery liquid injectionmechanism further comprises a controller and a monitoring module. Aninput end of the controller is electrically connected with themonitoring module, and an output end of the controller is electricallyconnected with the driving device 3. Specifically, the monitoring moduleis configured for detecting liquid injection information of theto-be-wetted device 1 and transmitting the obtained liquid injectioninformation to the controller. The controller is used for receiving theliquid injection information transmitted from the monitoring module,reading preset information stored in the controller in advance,comparing the liquid injection information with the preset information,and generating a corresponding rotation instruction. The driving device3 is used for receiving the rotation instruction sent from thecontroller. The rotation instruction comprises a rotating direction anda number of rotations. The driving device 3 receives the rotationinstruction, and controls the rotating direction and the number ofrotations.

In the embodiment, the driving device 3 rotates clockwise by a turn andthen rotates counterclockwise by a turn, which is one cycle. Therotation cycle of the driving device 3 is controlled through therotation instruction, so that the wetting liquid is fully wetted in theto-be-wetted device 1, thus improving the liquid injection efficiency.The driving device 3 comprises an electric motor or a motor.

The present invention provides the centrifugal battery liquid injectionmechanism, which comprises the liquid injection device 2 and the drivingdevice 3, wherein the liquid injection device 2 is provided with thepiston mechanism and the liquid outlet head 27 capable of being openedand closed, and one end of the liquid injection device 2 close to theliquid outlet head 27 is further provided with the liquid injection port11 capable of being opened and closed; and the liquid injection port 11is used for injecting the wetting liquid into the liquid injectiondevice 2. The liquid injection device 2 is connected with a to-be-wetteddevice 1 through the liquid outlet head 27, so as to inject the wettingliquid into the to-be-wetted device 1. The driving device 3 is connectedwith the to-be-wetted device 1 for driving the to-be-wetted device 1 tomove. Compared with the prior art, the centrifugal battery liquidinjection mechanism put forward by the present invention has theadvantages of apparent wetting effect, high safety performance, low costand simple operation.

In the embodiment, the to-be-wetted device 1 is a battery, and thewetting liquid inside the liquid injection device 2 is an electrolyte.The electrolyte enters the to-be-wetted device 1 from the liquidinjection device 2 by connecting the liquid outlet head 27 to theto-be-wetted device 1.

Embodiment 2

Based on Embodiment 1, the embodiment puts forward a liquid injectionmethod using the centrifugal battery injection mechanism put forward byEmbodiment 1, with a schematic diagram as shown in FIG. 6 of thespecification. A specific solution is as follows.

The liquid injection method comprises the following steps of:

-   -   S1: injecting the wetting liquid into the liquid injection        device through the liquid injection port;    -   S2: opening the liquid outlet head, controlling the piston        mechanism to move towards one end of the liquid outlet head, and        injecting the wetting liquid in the liquid injection device into        the to-be-wetted device; and    -   S3: controlling the driving device to drive the to-be-wetted        device to move, so that the wetting liquid is fully wetted in        the to-be-wetted device.

The step S1 of injecting the wetting liquid into the liquid injectiondevice through the liquid injection port comprises:

-   -   closing the liquid outlet head and the liquid injection port,        and controlling the piston mechanism to move towards one end far        away from the liquid outlet head, so as to form a negative        pressure space between the liquid outlet head and the piston        mechanism; opening the liquid injection port, and injecting the        wetting liquid into the liquid injection device through the        liquid injection port; and after finishing liquid injection,        closing the liquid injection port. By the operations above, no        outside air will enter the liquid injection device when the        wetting liquid is injected into the liquid injection device.

The liquid injection method further comprises: keeping the liquidinjection port in a closed state, opening the liquid outlet head, andcontrolling the piston mechanism to move towards one end far away fromthe liquid outlet head, so as to pump out gas in the to-be-wetteddevice. The wetting liquid is fully wetted in the to-be-wetted device bypumping out gas.

The step S2 of opening the liquid outlet head, controlling the pistonmechanism to move towards one end of the liquid outlet head, andinjecting the wetting liquid in the liquid injection device into theto-be-wetted device, comprises the following operations.

In an embodiment, the liquid outlet head is opened, and the piston isdriven by the external air pump. When air suction is performed on theliquid injection device by the external air pump, the piston movestowards one end far away from the liquid outlet head; and when airblowing is performed on the liquid injection device by the external airpump, the piston moves towards one end close to the liquid outlet head,thus injecting the wetting liquid in the liquid injection device intothe to-be-wetted device.

In another embodiment, the liquid outlet head is opened, and the drivingrod is pushed to drive the piston. When the driving rod moves towardsone end far away from the liquid outlet head, the piston moves towardsone end far away from the liquid outlet head; and when the driving rodmoves towards one end close to the liquid outlet head, the piston movestowards one end close to the liquid outlet head, thus injecting thewetting liquid in the liquid injection device into the to-be-wetteddevice.

The step S3 of controlling the driving device to drive the to-be-wetteddevice to move, so that the wetting liquid is fully wetted in theto-be-wetted device, comprises:

-   -   controlling the driving device to drive the to-be-wetted device        to rotate clockwise, rotate counterclockwise, or alternately        rotate clockwise and counterclockwise, so that the wetting        liquid is fully wetted in the to-be-wetted device.

In the embodiment, the driving device is controlled to drive theto-be-wetted device to rotate clockwise by a turn, and the drivingdevice is controlled to drive the to-be-wetted device to rotatecounterclockwise by a turn, which is one cycle. The rotation cycle iscontrolled according to a wetting degree until the wetting liquid isfully wetted in the to-be-wetted device, and then the driving devicestops rotating.

The present invention provides the liquid injection method using thecentrifugal battery liquid injection mechanism, and the liquid injectionmethod comprises the following steps of: injecting the wetting liquidinto the liquid injection device through the liquid injection port;opening the liquid outlet head, controlling the piston mechanism to movetowards one end of the liquid outlet head, and injecting the wettingliquid in the liquid injection device into the to-be-wetted device; andcontrolling the driving device to drive the to-be-wetted device to move,so that the wetting liquid is fully wetted in the to-be-wetted device.Compared with the prior art, the liquid injection method put forward bythe present invention has the advantages of apparent wetting effect,high safety performance, low cost and simple operation.

Those of ordinary skills in the art should understand that the modulesor steps of the present invention above may be implemented by a commonlyused computing device, and may be concentrated on a single computingdevice or distributed on a network composed of multiple computingdevices. Optionally, the modules or steps may be implemented by aprogram code executable by the computing device, so that the modules orsteps may be stored in a storage device to be executed by the computingdevice, or the modules or steps may be implemented by making the modulesor steps into various integrated circuit modules respectively, or bymaking a plurality of modules or steps from the modules or steps into asingle integrated circuit module. In this way, the present invention isnot limited to any specific combination of hardware and software.

It should be noted that the above are only the preferred embodiments ofthe present invention and the applied technical principles. Thoseskilled in the art may understand that the present invention is notlimited to the specific embodiments herein, and various obvious changes,readjustments and substitutions can be made by those skilled in the artwithout departing from the scope of protection of the present invention.Therefore, although the present invention has been explained in detailthrough the above embodiments, the present invention is not limited tothe above embodiments, but may also comprise more other equivalentembodiments without departing from the concept of the present invention,and the scope of the present invention is determined by the scope of theappended claims.

The above only describes a few specific implementation scenarios of thepresent invention, but the present invention is not limited to this. Anychanges that those skilled in the art can think of should fall withinthe scope of protection of the present invention.

The invention claimed is:
 1. A centrifugal battery liquid injectionmechanism, comprising a liquid injection device, a driving device, and asupporting device, wherein, the liquid injection device comprises a mainbody and a plurality of supporting columns extending along a liquidinjection direction and arranged around the main body; the main body hastwo ends opposite to each other, wherein one of the two ends is arrangedwith a liquid outlet head capable of being opened and closed and aliquid injection port capable of being opened and closed; the liquidinjection port is used for injecting a wetting liquid into the liquidinjection device; and the liquid injection device is connected with ato-be-wetted device through the liquid outlet head, so as to inject thewetting liquid into the to-be-wetted device; a piston mechanism isarranged inside the main body; the other of the two ends is arrangedwith a mechanical valve; and the mechanical valve is connected with anexternal air pump, so as to drive the piston mechanism to slide in theliquid injection device based on air blowing and suction of the airpump; the piston mechanism comprises a piston and a driving rod; an edgeof the piston clings to an inner wall of the liquid injection device,and the driving rod is connected with the piston, so as to drive thepiston to slide along the inner wall of the liquid injection device; thepiston is capable of moving towards one end of the liquid outlet head,and therefore injects the wetting liquid into the liquid into theto-be-wetted device; the piston is capable of moving towards one end faraway from the liquid outlet head, so as to pump out gas in theto-be-wetted device; the driving device is connected with theto-be-wetted device for driving the to-be-wetted device to move; and theliquid injection device and the to-be-wetted device are both connectedwith the supporting device, and the driving device is connected with theto-be-wetted device by being connected with the supporting device; thesupporting device comprises a bracket, and the liquid injection deviceis detachably connected with the bracket; in condition of the liquidinjection device being detached with the bracket, the plurality ofsupporting columns pass through the bracket.
 2. The centrifugal batteryliquid injection mechanism according to claim 1, wherein the supportingdevice is provided with a bayonet; and the to-be-wetted device isdetachably connected with the supporting device by being embedded intothe bayonet.
 3. The centrifugal battery liquid injection mechanismaccording to claim 1, wherein the supporting device is provided with astereoscopic position regulating assembly, and the liquid injectiondevice is connected with the stereoscopic position regulating assembly.4. The centrifugal battery liquid injection mechanism according to claim1, wherein the liquid outlet head comprises a hose tube.